From nobody Fri Oct 31 03:48:28 2025 Delivered-To: importer@patchew.org Received-SPF: pass (zohomail.com: domain of lists.xenproject.org designates 192.237.175.120 as permitted sender) client-ip=192.237.175.120; envelope-from=xen-devel-bounces@lists.xenproject.org; helo=lists.xenproject.org; Authentication-Results: mx.zohomail.com; spf=pass (zohomail.com: domain of lists.xenproject.org designates 192.237.175.120 as permitted sender) smtp.mailfrom=xen-devel-bounces@lists.xenproject.org; dmarc=fail(p=none dis=none) header.from=arm.com Return-Path: Received: from lists.xenproject.org (lists.xenproject.org [192.237.175.120]) by mx.zohomail.com with SMTPS id 1753086773357180.94844342454098; Mon, 21 Jul 2025 01:32:53 -0700 (PDT) Received: from list by lists.xenproject.org with outflank-mailman.1051168.1419481 (Exim 4.92) (envelope-from ) id 1udlwx-0007hT-Ig; Mon, 21 Jul 2025 08:32:43 +0000 Received: by outflank-mailman (output) from mailman id 1051168.1419481; Mon, 21 Jul 2025 08:32:43 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1udlwx-0007hG-FY; Mon, 21 Jul 2025 08:32:43 +0000 Received: by outflank-mailman (input) for mailman id 1051168; Mon, 21 Jul 2025 08:32:42 +0000 Received: from se1-gles-flk1-in.inumbo.com ([94.247.172.50] helo=se1-gles-flk1.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1udlwv-0005OI-Vp for xen-devel@lists.xenproject.org; Mon, 21 Jul 2025 08:32:41 +0000 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by se1-gles-flk1.inumbo.com (Halon) with ESMTP id 437db7ed-660d-11f0-b894-0df219b8e170; Mon, 21 Jul 2025 10:32:40 +0200 (CEST) Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id B6E02153B; Mon, 21 Jul 2025 01:32:33 -0700 (PDT) Received: from PWQ0QT7DJ1.arm.com (unknown [10.57.71.32]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 4643C3F66E; Mon, 21 Jul 2025 01:32:38 -0700 (PDT) X-Outflank-Mailman: Message body and most headers restored to incoming version X-BeenThere: xen-devel@lists.xenproject.org List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xenproject.org Precedence: list Sender: "Xen-devel" X-Inumbo-ID: 437db7ed-660d-11f0-b894-0df219b8e170 From: Hari Limaye To: xen-devel@lists.xenproject.org Cc: luca.fancellu@arm.com, Stefano Stabellini , Julien Grall , Bertrand Marquis , Michal Orzel , Volodymyr Babchuk Subject: [PATCH v4 6/6] arm/mpu: Implement remove_early_mappings for MPU systems Date: Mon, 21 Jul 2025 09:31:47 +0100 Message-ID: X-Mailer: git-send-email 2.42.1 In-Reply-To: References: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-ZM-MESSAGEID: 1753086774605116600 Content-Type: text/plain; charset="utf-8" From: Luca Fancellu Implement remove_early_mappings for MPU systems. Signed-off-by: Luca Fancellu Signed-off-by: Hari Limaye Reviewed-by: Michal Orzel --- Changes from v1: - Add Ayan's R-b Changes from v2: - Remove full stop - Remove sanity check for `mapped_fdt_paddr =3D=3D INVALID_PADDR` Changes from v3: - Drop Ayan's R-b - Add Michals's R-b --- xen/arch/arm/mpu/setup.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/xen/arch/arm/mpu/setup.c b/xen/arch/arm/mpu/setup.c index 2ef703757f..163573b932 100644 --- a/xen/arch/arm/mpu/setup.c +++ b/xen/arch/arm/mpu/setup.c @@ -96,7 +96,11 @@ void __init copy_from_paddr(void *dst, paddr_t paddr, un= signed long len) =20 void __init remove_early_mappings(void) { - BUG_ON("unimplemented"); + int rc =3D destroy_xen_mappings(round_pgdown(mapped_fdt_base), + mapped_fdt_limit); + + if ( rc ) + panic("Unable to unmap the device-tree\n"); } =20 /* --=20 2.34.1